Instructions: Refer to the Data Below to Answer the Following $\mathrm{p} K_{\mathrm{a}} \mathrm{s}$

Instructions: Refer to the data below to answer the following question(s).
$\mathrm{p} K_{\mathrm{a}} \mathrm{s}$ of Some Phenols $~~~~~~~~~~~~~~~~~~~~\frac{\underline{Y}}{-\mathrm{H}} \quad~~~~~~ \frac{\mathrm{p} K_{\mathrm{a}}}{9.89}$

$\begin{array}{lr}m-\mathrm{NO}_{2} & 8.28 \\p-\mathrm{NO}_{2} & 7.17 \\m-\mathrm{OCH}_{3} & 9.65 \\p-\mathrm{OCH}_{3} & 10.21\end{array}$ Refer to instructions.
a) The weakest acid in the table is
b) Which of the acids in the table has the weakest conjugate base?